An architect transformed this abandoned cement factory into his castle-like workshop.

This ancient Spanish castle sits high upon a hilltop.

This whimsical winery by Antoni Gaudí looks ripped from the pages of a fairytale.

An ornate tower shows off a local artist's architectural flair.

Semi-mystical manmade towers of rocks decorate this rocky seaside.

Along the most northwestern point in Africa is an ancient cave surrounded by legends.

The remains of an encyclopedic sculpture garden later used as an internment camp.

Replica of Seville, Spains famous Giralda, a former minaret converted into a bell tower.

Hidden well off the beaten path in Catalonia is this crumbling medieval castle that is slowly being covered in graffiti.

This unassuming chapel in Portugal plays host to a ghoulish collection of bones.

In Portugal, a secluded stretch of untouched natural beauty hides at the bottom of a steep hill.

A unique seaside cave where Aleister Crowley faked his own death.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This small chapel is built of human bones and decorated with a golden skeleton.

A fortress off the West coast of Portugal that dates back to 1502.

Beneath the city of Lourdes, France is a massive, concrete church.

This futuristic observatory at the top of the Pyrénées offers unrivaled views.

At night, bats patrol this magnificent 18th-century space in search of book-eating pests.

This oddly shaped church resembles a rocket.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

A modernist church in an ancient village.